Seriously, you've been drinking?

Now, I'm not entirely sure what "tested positive for alcohol" is supposed to mean, but I figure that if I hadn't given up booze for Lent, I'd test positive right now (hey, 29 days of sobriety and counting!). But, then again, I don't work at a nuclear power plant, where I imagine that unless you happen to be Homer Simpson, it's not a good thing to show up with booze in your system. Seriously, nuclear energy has a bad enough name without its workers showing up drunk.